Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 11 (ENGINE MECHANICAL - 4.3L UNIT REPAIR)REPAIR INSTRUCTIONSCAMSHAFT INSTALLATION

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Camshaft Installation

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Camshaft Installation

WARNING: This page is about a different variant/trim than selected.

Apply clean engine oil GM P/N United States 12345610, GM P/N Canada 993193, or equivalent, or engine oil supplement GM P/N United States 1052367, GM P/N Canada 992367, or equivalent, to the following components:
- The engine camshaft lobes
- The camshaft bearing journals
- The camshaft bearings
- The distributor drive gear
  
  Fig 1: Installing Camshaft
  Courtesy of GENERAL MOTORS CORP.
Install three 5/16-18 x 4.0 inch bolts into the engine camshaft front bolt holes.
NOTE: All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.
Use the bolts as a handle in order to install the engine camshaft.
Remove the 3 bolts from the front of the engine camshaft.
If reusing the fasteners, apply threadlock GM P/N United States 12345382, GM P/N Canada 10953489, or equivalent, to the threads of the camshaft retainer bolts.
Install the camshaft retainer and bolts. Tighten the camshaft retainer bolts to 12 N.m (106 lb in ).

Fig 2: Camshaft Retainer & Bolts
Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.